Jacquard cylinder motion



H` V. FOSTER JACQUARD CYLINDER MOTION Filed Sept. 25, 1956 mmm...

' IIIII Flai Inventor Herbert. \/.Fo5te\- JM T 7,/

Att orney Patented Dec. 28, 1937 PATENT OFFICE JACQUARD CYLINDER MOTION' Herbert Victor Foster, Providence, R. I., assignor to Crompton & Knowles Jacquard & Supply Company, Pawtucket, R. I., a. vcorporation of Massachusetts lApplication September 25,1936, Serial No. 102,561

l 11 Claims. This invention relates to improvements in jacquard cylinder motions and it is the general object of the invention to give the cylinder a smoother motion than has been possible with previous constructions, to the end that the cards and their lacings may be subjected to a minimum of wear.

The usual form of jacquard employs a cylinder which is reciprocated in a horizontal direction toward and away from the needle board. A set of cards are employed which are fed one at a time to the needle board by rotation of thecylinder. It has been usual practice to give the cylinder an angular movement sufficient to present a new card during the outward motion of the cylinder away from the needle board, and as a result the cards have been subjected to severe strains. It is an important object of my present invention to provide means for turning the cylinder at a slower more gradual rate than heretofore.

YIt is a further object of my invention toprovide means for giving the cylinder a part of its angular motion during the outward stroke away from the needle board and to complete the angular motion on the return stroke as the cylinder approaches the needles. A still further object is to complete the turning before the cards reach the needle board. v l

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawing, wherein a convenient embodiment of my invention is set forth,

Fig. 1 is a detailed end elevation of the upper part of a jacquard havingmy invention applied thereto, the cylinder being shown in the needle indicating position in full lines and partially turned in dotted lines,

Fig. 2 is a'view similar to Fig. 1 with Ythe cylin- Y It is to be understood that the cylinder formsA only a part of the jacquard mechanism which is mounted over a loom and only such parts of the jacquard are shown as are necessary to set forth my present invention. Referring to the drawing, particularly Fig. 4, vthe jacquard frame Illis proalink`|2 to an arm I3 moving onV a pivot I4.

The arm is rocked in any approved manner so as to move the slide rod in a horizontal direction, giving said rod a reciprocation for each beat of the loom when the jacquard is of the so-called single cylinder type.

My' invention relates more particularly to the mechanism for turning the cylinder and by referring to Figs. 1, 2 and 3 it will be seen that the rod has rigidly mounted thereon a bearing 20 for a gudgeon 2| of the four-sided jacquard cylinder 22. There are four lugs 23, 24, and 26rigid with the cylinder and adapted for engagement with a pawl 3|! loosely pivoted on a pin 3| xed in horizontally adjusted position in a slot 32 formed in a part oi the jacquard frame. The pawl has a hook 33 for engagement with the lugs and normally is held by gravity in position for engagement with the upper left lug, as viewed in Fig. 1.

Extending upwardly from the bearing is a stand 35 on which is mounted a stem 36 surrounded by a compression spring 31 which presses down a shoulder 38 on the stem. The lower end of the stem is formed with a head 39 adapted for engagement normally with the upper pair of lugs.

A second frame 40 is mounted to swing pivotally about the gudgeon 2| and has a stem `4I surrounded by compression spring 42.to bear against a shoulder 43.V The stem 4| has a bottom or lower head 44 for engagement with the lower pair of lugs. A stop 45 is xed tothe frame4 and is adapted for engagement with the vertical face 50 of an abutment 5|Y secured as at 52 to the jacquard frame.

A needle board 60 of the usual .form has needles 6| two of whichare indicated in Fig. 2 tovbe responsive to the cards C indicated in dot and dash lines, Fig. l. The cards are fed progressively by angular motion of the cylinder.

In operation, with the parts in the full line position shown in Fig. 1, the cylinder is in its normal angular position and placed to force a card against the needle board. The head 39 engages the upper lugs 23 and 24 to hold the cylinder with its sides vertical. In this same position the head 44 is held yieldingly against the lower lugs 25 and 26 and acts to hold the frame 40 yieldingly in the full line position of Fig. 1 with the stop 45 spaced from the surface 50.

As the slide rod Il moves to the left the upper left lug 23 will engage the hook 33 to arrest further .movement of the corresponding corner of the cylinder, after which continued outward motion of the cylinder will cause the latter to turn in a right hand direction around the gudgeon 2|, and at the end of the outward motion the cylinder will assume the dotted line position shown in Fig. l. It will be noted that during this motion the cylinder moves away from the needles to a position corresponding approximately to the dotted lines of Fig. 2 before the pawl engages the lug 23, and 'that during the latter part of the outward motion, stop 45 engages fixed surface 59, causingfframe im to assume the. oblique dotted position of Fig. li. There is a corresponding up motion of hammer 39 which is induced by the positive action of the pawl and rod il. At the end of the out motion the head 39.4 presses downL on lug 23, but its turning moment about gudgeon 2| is too small to overcome the effect of head 44T bearing on lugs 24 and 25'. The cylinder there-- fore remains in its partiallyturned position without completing the Vfull 90 necessary to present the next card.

On the return or inward stroke of the cylinder,

head 39 will press down on lug 23 and tend toturn the cylinder in a right hand direction, the turning however being. controlled by the Vengagement of stop 45 with surface 59. Gravity will also assist this turning, since the frame 4D tends to become vertical under gudgeon 2.l-. Onthis return stroke head. 44V will remain in the. fullfline position of- Fig. 2 relatively to the cylinder, and the continuing down pressure of head-,39 will cause a right hand angular motion of the cylinder until theparts assume` the position shown in dotted lines, Fig.V 2, with` the head 39 inv engagement with the two upper lugs and stop 45 ready to leave surface 59. The turning of the cylinder is completed before the next card can reach the needles, after which the cylinder moves to the indicating position', presenting the card to the needles. by a right line motion. During this period stop 45. moves away from surface 59, a condition which favors the correct Ypresentation of the cards to the needles.

From theV foregoing it will be seen that I have provided means. for giving the cylinder two turning impulses one of Vwhich occurs when the cylinder is moving away from the. needle board the other oi which takes place duringr the rst part of theY return motionl of the cylinder toward the needles and that the effect of this mode of operation is to cause a relatively slow feeding of the jacquard cards so that the latter are subjected to a minimum strain. It; will further be seen that the second of the impulses. is completed before the card is presented to the needles, a condition which grows out of the fact that the top head is able to return the cylinder to .an erect position before the rods ilV have completed their return motion and also because of the fact thatthel stop 45 is free to move away from the surface 59, thereby permitting the cylinder and two frames to4 move as a unit. in a right linemotion. Also, the top hammer head 39 assists in thev second turning impulse and serves to maintain the cylinder in correct position after said second iml-V pulse is completed. The lower hammer head 44 because or" the relation which it sustains to the lugs adjacent thereto prevents the upper hammer from completing the turn which is initiated by the pawl while the cylinder is in its outermost position. To this extent the lower hammer is aV .yielding check which restrains the normal action of the upper hammer which as used heretofore has been to complete immediately the turning of the cylinder which is started, by the pawl. When the parts are in the dotted line position shown in Fig. 1 the upper plunger head acts on the cylinder at a mechanical disadvantage While the lower head 44 acts through a larger turning moment and is therefore able to restrain the eect of the upper hammer. The latter acts during the return stroke toward the needle board to give the cyl inder its second turning impulse but this action is controlled by engagement of the stop 45 with the surface 59. Y Y

lI-laving thus describedz'my invention it will be seen that changesand modifications maybe made therein by those skilled in theart without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

le In acylinder motion for a jacquard, a needle boardL having needles, a cylinder, means to move the cylinder? away from and toward the needles, means to give thel cylinder a primary angular -motionl i-n-a given direction as the cylinder moves away from the needles, pressure means thereafter tending togive the cylinder a secondary angular motionin saidgiven direction, anda controller for the pressure meanstd restrain the latter but operative-by, motion of the cylinder toward the needles to render the pressuremeans effective to give the cylinder the secondary angular. motion in said given direction.V i Y 2. In a cylinder motion for a jacquard, a needle board,A a cylinder, a member in which the cylinder is, rotatable to. move said' cylinder away from and toward the needle board, apawl, means to render the pawl operative during motion of the cylinder away from the needle board to give said cylinder an initial turningl movement in a Vgiven direction, pressure Vmeans tending to give Vthe, cylinder a second turning movement in said given direction, and control means for the pressure means' to Y render the latter VAeffective to give the cylinder the Vsecond turning movement in. said givenV direction asthe cylinder moves. toward the Yneedle board.

3. In a cylindermotion'for a jacquard, a needle board havingneedles,v a cylinder, means to move the cylinder away from and toward the needles, means to give the cylinder a primary angular motion in a given direction as the cylinder moves away from the needles, pressure means thereafter tendingA togive the. cylinder a'secondary angular vmotionin said given direction, and a controller Y thev needles.

4. In a jacquard cylinder motion, a reciproeating member, a cylinder rotatably mounted with respect to the member, a pawl movable about a fixed axis, means carried by the cylinder to engage the pawl when the member moves Vin one direction to give the cylinder a rst turning impulse, yielding means rendered capable by movement of thercylinder during the Vrst impulse to exert on said cylinderV a force tending to give the cylinder Ya second turning impulse independent of the paWl, restrainingl means to prevent the yielding means from giving the cylinder its second impulse, and means, rendered operative by movement of the member in the oppositedirection to lessen the effect of the restraining means in opposing the yielding member, whereby the latter gives the cylinder a gradual second turning impulse when the member moves in the opposite direction.

5. In aV jacquard cylinder motion, a needle board, a reciprocatingdmember, a cylinder rotatably mounted on the member and moved by the latter away from and toward the needle board, a pawl effective to give the cylinder anv initial turning impulse when the cylinder moves away from the needle board, yielding kmeans rendered operative at the end of the movement of the cylinder away from the needle board tending to give said cylinder a second turning impulse, restraining means to prevent the yielding means from giving the second turning impulse to the cylinder when the latter is remote from the needle board, and means to reduce the restraint exercised on the yielding'means as the member moves the cylinder toward the needle board to the end that the yielding means becomes operative to give the cylinder a second turning impulse when moving toward the needle board.

6. In a jacquard cylinder motion, a needle board, a reciprocating member, a cylinder rotatably mounted on the member and moved by the latter away from and toward the needle board,

means operative during movement of the. cylin der away from the needle board to give said cylinder an initial turning impulse, yielding means tending to give the cylinder a second turning impulse when said cylinder is remote from the needle board, restraining means including a part moving with the cylinder to prevent the yielding means from giving the second impulse to the cylinder, and relieving means rendered operative by movement of the cylinder toward the needle board to progressively reduce the resistance offered thereby to the yielding means to the end that the latter becomes operative to give the cylinder the second turning impulse.

7. In a jacquard cylinder motion, a needle board having needles, a reciprocating member, a cylinder rotatably mounted on the member and moved by the latter away from and toward the needle board, means operative during movement of the cylinder away from the needle board to give said cylinder a turning impulse, pressure means tending togive the cylinder a second turning impulse when said cylinder is remote from the needle board, restraining' means including a part moving with the cylinder to prevent the pressure means from giving the second impulse to the cylinder, and relieving means rendered operative by movement of the cylinder toward the needle board to progressively reduce the resistance offered thereby to the pressure means to the end that the latter becomes operative togive the cylinder a completed second turning impulse before the cylinder reaches the needles.

8. In a jacquard cylinder motion, a needle board, a reciprocating rotatable cylinder movable away from and toward the needle board, a frame reciprocating with the cylinder, a second frame pivoted with respect to the cylinder, means operative during motion of the cylinderl away fromrthe needle board to give said cylinder an initial turning impulse, a pressure element carried by the first frame `and rendered operative at the conclusion of the motion of the cylinder away from the needle board to exert a force tending to give the cylinder a second turning impulse,V a

yielding element carried by the pivoted frame and resisting the pressure element, and the pressure means operative through the cylinder to hold the pivoted frame .against the stop means, said second yielding element and pivoted frame movable angularly by the pressure means when the cylinder approaches the needleV board to the end that the pressure element becomes effective to give the cylinder the second turning impulse as the cylinder approaches the needle board.

9. In a cylinder motion for a jacquard having a needle board, a cylinder, a plurality of lugs fixed with respect to the cylinder, means to move the cylinder and lugs awayv from and toward the needle board, a pawl to engage one of the lugs as the cylinder moves away from the needle board to give said cylinder an initial turning impulse, pressure means moving with the cylinder to engage one of the lugs and tending to give said cylinder a second turning impulse when the cylinder is remote from the needle board, a frame pivotally mounted with. respect to the cylinder,

' a yielding element carried by the frame to engage two adjacent lugs and resist the action of the pressure means, a stop against which the pressure means holds the frame in an oblique position by a force exerted through the lugs and yielding element, motion of the cylinder toward the needle board rendering the pressure means operative to give the cylinder the second turning impulse and move the frame to an erect position as said frame moves relatively to the stop.

10. In a jacquard cylinder motion, a needle board, a rotatable cylinder, means tomove the cylinder away from and toward the needle board, a pawl to cause an initial angular motion of the cylinder as the latter moves away from the needle board, means rendered operative during the latter part of the initial angular motion to tend to give the cylinder a second angular motion, in combination with restraining means including a iixed part and a part movable with the cylinder and effective during motion of the cylinder toward the needle board to retard the action of the second named means and render the latter effective to impart angular motion to the cylinder during a considerable part of the motion thereof toward the needle board.

11. In a jacquard cylinder motion, a needle board, a rotatable cylinder, means to move the cylinder away from and toward the needle board, a pawl to cause an initial angular motion of the cylinder as the latter moves away from the needle A HERBERT VICTOR FOSTER. 

